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Author Notes: Every Christmas growing up this is the “buche” or Christmas log my grandmother would make. It’s a cross between several Austrian recipes & a Julia Child butter cream….two words best describe it: decadent & delicious! It takes several hours to make, so patience is required, but the finished product will be the talk of many more Christmases to come!
There are 3 parts to making this cake, first you must make a genoise, or a sponge sheet cake, then a coffee butter cream & then a chocolate butter cream to mimic the effects of a log… —Culinista Annouchka
Genoise/ Sponge cake
grams of sugar (about 14 tablespoons)
grams of all-purpose flour (about 3/4 cup)
grams of butter (2 tablespoons), melted & cooled
- Preheat the oven to 400-425F (depending on the oven type). Butter a baking sheet [18" x 13" x 1.5" high] & line with parchment paper.
- In a mixer (use the K whisk extension if using a stand mixer) beat the egg yolks & sugar until light & fluffy, about 30 minutes (really that long!).
- In a separate bowl beat the egg whites until stiff peaks form. Incorporate them delicately to the yolk & sugar mixture; fold in about 1/3 of the egg whites first, then alternate between adding small amounts the egg whites & the flour, folding ever so gently.
- Add the melted butter – which should no longer be warm & pour onto the baking sheet spreading evenly.
- Place in the oven for 18 to 20 minutes or until the cake is golden or until the edges pull back and the center of the cake springs back when touched. Watch it carefully!
- Take the cake out of the pan and place it on a working surface and roll it up (as a 13? long log) with a moist kitchen towel inside so the cake doesn’t dry out and the sponge cake takes the shape of the log.
Creme au beurre/ Coffee butter cream
cup of sugar
cup of warm milk (2%)
grams of cold butter (that’s a little over 3 sticks of butter); cut into small pieces
teaspoon of instant coffee dissolved in a little bit of water
pinch of cornstarch
ounces of bittersweet chocolate (for the Chocolate butter cream part)
- Beat the egg yolks & the sugar until pale and fluffy, 10 minutes, add the instant coffee & a pinch of cornstarch. Then add the warm milk little by little, so as not to curdle the mixture.
- Transfer the mixture to a pan and over medium-low heat, keep stirring until the mixture thickens, never letting it come to a boil. Test it with a wooden spoon: if the mixture coats the back of a wooden spoon it is ready.
- Once thick enough, take off the heat and keep beating it until the mixture is less hot (slightly warmer than room temperature).
- Put the cream back into the stand mixer and add the butter one little piece at a time, as you would for a mayonnaise. The cream will thicken little by little.
- To assemble the “buche”: Unroll the cake and place a thick layer of butter cream and roll it back up. Then put butter cream all over the exterior of the cake. To make the “buche” more log-like, with a fork add “lines” of chocolate butter cream (below) all around the log. Place on a serving platter and decorate with currants or meringue kisses or chocolates!
- For the chocolate butter cream: 2 ounces of bittersweet chocolate & the leftover butter cream (see recipe above) Melt the chocolate, cool & combine with the leftover butter cream.
- This recipe was entered in the contest for Your Best Family Recipe